lkml.org 
[lkml]   [2021]   [Mar]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] ARM: dts: stm32: fix usart 2 & 3 pinconf to wake up with flow control
From
Date
Hi Valentin

On 2/11/21 12:07 PM, Valentin CARON - foss wrote:
> Modify usart 2 & 3 pins to allow wake up from low power mode while the
> hardware flow control is activated. UART RTS pin need to stay configure
> in idle mode to receive characters in order to wake up.
>
> Fixes: 842ed898a757 ("ARM: dts: stm32: add usart2, usart3 and uart7 pins in stm32mp15-pinctrl")
>
> Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
> ---

Applied on stm32-fixes.

Thanks
Alex

> arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 21 ++++++++++++++++++---
> 1 file changed, 18 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
> index 7b4249ed1983..060baa8b7e9d 100644
> --- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
> +++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
> @@ -1891,10 +1891,15 @@
> usart2_idle_pins_c: usart2-idle-2 {
> pins1 {
> pinmux = <STM32_PINMUX('D', 5, ANALOG)>, /* USART2_TX */
> - <STM32_PINMUX('D', 4, ANALOG)>, /* USART2_RTS */
> <STM32_PINMUX('D', 3, ANALOG)>; /* USART2_CTS_NSS */
> };
> pins2 {
> + pinmux = <STM32_PINMUX('D', 4, AF7)>; /* USART2_RTS */
> + bias-disable;
> + drive-push-pull;
> + slew-rate = <3>;
> + };
> + pins3 {
> pinmux = <STM32_PINMUX('D', 6, AF7)>; /* USART2_RX */
> bias-disable;
> };
> @@ -1940,10 +1945,15 @@
> usart3_idle_pins_b: usart3-idle-1 {
> pins1 {
> pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
> - <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */
> <STM32_PINMUX('I', 10, ANALOG)>; /* USART3_CTS_NSS */
> };
> pins2 {
> + pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */
> + bias-disable;
> + drive-push-pull;
> + slew-rate = <0>;
> + };
> + pins3 {
> pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */
> bias-disable;
> };
> @@ -1976,10 +1986,15 @@
> usart3_idle_pins_c: usart3-idle-2 {
> pins1 {
> pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
> - <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */
> <STM32_PINMUX('B', 13, ANALOG)>; /* USART3_CTS_NSS */
> };
> pins2 {
> + pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */
> + bias-disable;
> + drive-push-pull;
> + slew-rate = <0>;
> + };
> + pins3 {
> pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */
> bias-disable;
> };
>

\
 
 \ /
  Last update: 2021-03-11 12:09    [W:0.056 / U:0.348 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site